Along with the data rollover, Sky is also offering the freedom to change data plans at anytime and Sky TV customers can create their personal playlists of favourite shows, synced from their Sky box at home, to watch wherever they are.

Speaking about the service Stephen van Rooyen, UK and Ireland Chief Executive,said: “We felt it was time to shake up the mobile market and give customers a completely new way to manage their mobile plan – something no one else is offering.

"We’ve designed it based on what people told us they want – it’s easy, flexible and transparent and it puts the customer in control.”

Sales for Sky Mobile SIM only contracts start in mid-December to existing customers and those who have pre-registered.

A full market launch will begin in the New Year.

Later in 2017, Sky Mobile will expand its offering to include the best handsets from Apple and Samsung, as well as from other providers to be confirmed nearer the time.